IPA: //ʌnˈflɪnʧɪŋli//
KK: /ʌnˈflɪnʧɪŋli/
In a way that shows no fear or hesitation; with determination and courage.
She faced the challenges unflinchingly, never backing down from her beliefs.
Unflinchingly → It is formed from "un-" (meaning not) and "flinch" (from Old English *flincan*, meaning to recoil or shrink back) and the suffix "-ingly" (indicating manner). The word means to do something in a manner that does not recoil or shrink back, showing steadfastness or courage.
Think of 'not recoiling' ('un-') when faced with challenges, which is what it means to act unflinchingly.